- (NSMutableAttributedString *)getHtmlStringWithString:(NSString *)string {
    NSDictionary *options = @{NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType,
                              NSCharacterEncodingDocumentAttribute : @(NSUTF8StringEncoding)};
    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
    NSMutableAttributedString *attStr = [[NSMutableAttributedString alloc] initWithData:data options:options documentAttributes:nil error:nil];
    
    // 设置段落格式
    NSMutableParagraphStyle *para = [[NSMutableParagraphStyle alloc] init];
    para.lineSpacing = 8;
//    para.paragraphSpacing = 10;
    [attStr addAttribute:NSParagraphStyleAttributeName value:para range:NSMakeRange(0, attStr.length)];
    
    // 设置文本的Font
    [attStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:12] range:NSMakeRange(0, attStr.length)];
    
    return attStr;
}